... Model: PST-VD906C Standard package includes:1 x 7" Color TFT LCD Screen Monitor1 x outdoor ... villas with 380 lines high definition CMOS camera (CCD camera optional and extra charge), which can monitor, ... intercom, unlock and call other indoor monitors.Feature: 7" high resolution color TFT LCD panel display, with ... , then, click "Indoor Call key" to confirm.7. Select melodies: There are 3 melodies can be ...